The error comes from EDT Finder. When EDT Finder is enabled the tool tries to find the EDT logic based on structural learning. In your case you have F4 violation meaning the tool could not find a decompressor. The tool was able to find a decompressor by structural learning but is able to find a name of what looks like a decompressor register. Try 'set_gate_report drc state' to find out if the register '/top_edt_i/top_edt_decompressor_i/\lfsm_vec_reg ' has connected ports and clock is not X.
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